CVE-2020-36318

rust: use-after-free or double free in VecDeque::make_contiguous

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Severity

Moderate

Red Hat Product Security

9.8

CVSS 3.1

Review impact separately from score.

Published · December 7, 2020

Updated · February 26, 2026

Description

In the standard library in Rust before 1.49.0, VecDeque::make_contiguous has a bug that pops the same element more than once under certain condition. This bug could result in a use-after-free or double free.

Statement

VecDeque::make_contiguous is not considered stable is versions of rust prior to 1:48. As a result, it should not be used as shipped in Red Hat Enterprise Linux versions 8.3 and older.

CVSS score applicability

The CVSS score(s) listed for this vulnerability do not reflect the associated product's status, and are included for informational purposes to better understand the severity of this vulnerability.

Mitigation

No mitigation is specified in collected source.

CVSS / CWE

CVSS 3.1 · 9.8
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

CWE-416 · Use After Free